How do i get [ Monster Bone + ]?

I know this question has been asked tons of times before, but most of the answers don't work. I have tried killing Yian kut-ku and daimyo hermitaur 12 times each, but both dont give monster bone+. D.Hermitaur keeps giving me giant bone and large monster bone, which isnt what i want. Help is appreciated.

Do double daimyo in chief quests with a 800+ damage hammer. He won't be able to even attack if you do running "R" combos on his horned shell thing. I did the double quest in 6 minutes with a 1090 hammer and got 6 monster bone+ and 2 red horns.